Intensity of scattered acoustic waves in the atmospheric boundary layer in the absence of heat sources on a surface

The intensity of scattered acoustic waves in the atmospheric boundary layer (ABL) in the absence of heat sources on a surface was investigated. Since the wind was weak echograms were influenced by changes in temperature. Since uniform flow in the ABL usually contains both wind and the temperature components, besides the wind does not directly influence, its contribution is masked by scattering by inhomogeneities in temperature. The random motion of continuum implies a random field of forces leading to changes in the rate of parts or separate volumes. In the absence of external fields such a force field can be caused only by random pressure field. Turbulent density fluctuations of the main flow are determined by the divergence its velocity. The divergence of the flow leads to the fluctuation of density and pressure simultaneously. It can be expected that at a fairly strong wind and the lack of heating surface, the intensity of the reflected signal can be sufficient for accurate registration of its parameters, as well as for subsequent extracting useful information.